Item

Measuring Procedure

Standard

1.Appearance

Visual check

Clean, unscratched and clearly labeled

2.Dimenaions

Measured by calipers with precision of 0.02mm

Max φ14.5×33.5mm

3.Weight

Weighed by balance with precision of 0.1g

Max 13g

4.Open-circuit voltage

Measure by volt-meter with precision of 0.01V

≥3.65V

5.Operating voltage

Measure by volt-meter with precision of 0.01V, connecting an impedance of 620Ωin series, Reaching the target voltage in 5 seconds.

≥3.45V

6.Nominal discharge

6200Ω,20±2, Constant discharge to 2.0V.

≥1200mAh

7.Rapid discharge

82Ω,20±2, Constant discharge to 2.0V.

≥650mAh

8. Discharge at high temperature

Put battery in constant ambient temperature of 55±2 for 16 hours, discharge at 620Ω to 2.0V/cell.

≥1250mAh

9.Discharge at low temperature

Put battery in constant ambient temperature of -40±2 for 16 hours, discharge at 620Ω to 2.0V/cell

≥600mAh

10.Charge

Prohibited

Prohibited

11.Over-discharge

Prohibited

Prohibited

12.Self discharge

Store the batteries at constant temperature of 20±5, Measure the nominal capacity yearly for 10 years.

≤1%